Comb ehbubottom



(No Model.)

' VAN SGHAIGK SHARP.

MACHINE EOE SEAMING SHEET METAL.

UNITED STATES PATENT EEICE.

VAN SCHAICK SHARP, OF VEEDSPORT, NEV YORK, ASSIGNOR TO HOL- COMBRHEUBOTTOM & CO.

MACHINE FOR SEAMING SHEET METAL.

SPECIFICATION forming part. of Letters Patent. No. 358,894, dated March8, 1887.

Application filed June 19, 1886. Serial No. 205,652.

To al whom, it may concern:

Be it known that I, VAN Sonaten SHA Reef Veedsport, in the county oi'Cayuga, in the State of New York, have invented new and usefulImprovements in Machines for Seaming Sheet Metal, of which thefollowing, taken in connection with the accompanying drawings, is afull, clear, and exact description.

. This invention consists in a novel organization of a machine by meansot' which the socalledcross-seams7 and analogous splicings of tin andother sheet metal can be formed in an expeditious and perfectlyworkmanlike manner.

This invention is fully illustrated in the annexed drawings, wherein-Figure 1 is aside elevation of the machine having portions of the framebroken away to illustrate more perfectly other more important features.Eig. 2 is a front elevation. Figs. 3 and 4 are enlarged transversesections on line :v ,Fig. 2, showing the press-beam in differentoperative positions, and Fig. 5 is a transverse section showing theknife in its operative position for trimming the end of the metal sheet.

Similar letters of reference indicate correspendingY parts.

A represents a stout upright frame, carrying a tab1e,B. Across the topof said table is extended the press-beam G, the under side of which iscurved longitudinally in the form of an inverted archgand under thepressbeam, and parallel therewith, is a vertical offset, a, extendingacross the surface of the table, for the purpose hereinafter described.The ends of said press-beam are provided with trunnions orstud-pins,which project through vertically-slotted guides D D,risingfromopposite sides of the table and rigidly secured to the frame A.

Underneath the table,and parallel with the pressbeam G,is arranged ashaft, cl., journaled in suitable bearings on the frame. To the ends ofsaid shaft are attached two cranks, Z) Z), which are set at an angle inrelation to each other, for the purpose hereinafter explained. Thesecranks are connected with the trunnions on the ends of the press-beam,atthe outside of the guides D D, by means of pitmen F F. On the shaft a isalso secured a pinion,

(No model.)

. P, which meshes in asegment of a gear, I, journaled on a gudgeonattached to the leg ofthe frame A,below the shaftc. On the side of thegear I is a segment of a pulley, L, which is rigidly attached theretoand journaled in common therewith.

To the base of the frame A is connected a treadle, T, and to the latteris attached one end of a belt, c, the opposite end of which runs overthe periphery of the pulley, and is firmly secured to the end of thesegment thereof. To the same end of said segment is attached one end ofa spring, d, the opposite end of which is secured to a cross-bar, e, orother suitable support on the frame A.

To the top of the table B, inl front of the press-beam,is attached astraight gage, e, eX- tending along one side of the table,for thepurpose of guiding the tin or sheet metal so as to bring the seamthereof parallel with the press beam.

Backof the press-beam, and parallel therewith, is a skeleton roller, R,journale'd in arms Z, projecting from the rear end of the table, saidroller having longitudinal cleats on which to hang the end of the sheetmetal, which is bent over so as to permit of hooking it onto one of thecleats. The roller is provided with a crank, m, by which to turn it, andon the end of said roller is also aiiixed a ratchetwheel, u, with whichengages a dog, o, connected to the table, as shown in Fig. l of thedrawings.

Across the table B, some distance above it and back of the preSsbeam, isextended a bar, j', which is secured at opposite ends to the guides D D,adjustable vertically thereon, and from the bottom of said bar projectdownward two or more lugs, c v, which serve as stopgages in placing thesheets to be seamed under the press-beam, the vertical adjustment ofsaid gages being necessary to accommodate the same to differentthickness of the sheet metal.

The operation of my invention thus far described is as follows: Beforethe tin or sheet metal is subjected to the operation of the machine theedges of the sheets to be joined are bent over so as to hook into orinterlock with, each other, and the sheets thus interlocked are passedalong the top of the table B until ar `23 ings.

4o seam of. the sheet metal.

5 pressing the treadle T the pulley L and gear I receive a partialrotation and transmit rotary motion to the pinion l?, which, beingfastened to the shaft a, imparts rotary motion to the cranks b b, andthe latter imparts to the ro press-beam a combined longitudinal rockingor oscillatory and vertical reciprocating motion at right angles to theplane of the table. The press-beam is thereby caused to press upon thefolded or interloeked edges of the sheet metal successively from oneside of the table toward the opposite side, the pressure being appliedwith sufficient force to effectually close the seam of the sheet metal,as represented by dotted lines in Fig. et of the draw- The offset u inthe surface of the table is of the proper depth to receive in frontthereof the compressed folded edges of the sheets and leave the tops ofthe sheets flush with each other. The folded forward edge of z5 thefirst sheet is hooked onto the skeleton roller R, upon which the joinedsheets are subsequently wound by turning the crank m. The engagement ofthe dog o with the ratchetwheel a serves to retain the roller R from re-3o verse movement after it is released from the make adjustablevertically by providing the knife with vertical slots, through which theattaching-bolts M' pass. rIhis allows the knife to be raised, so as notto interfere with the operation Of the press-beam in compressing the Bylowering the knife so as to project below the bottom of thepress-beam,said knife can be employed for cutting or trimming thesheets.

Having described my invention, what I desire to secure by Letters Patentis- 1. The combination,with the sheet-supporting table, of a press-beamextended across the top of said table and arranged movably at rightangles to the plane thereoi`,and oscillatory lon` 5o gitudinally,substantially as and for the purpose specified.

2. The combination, with the sheet-support ing table, of a press-beamarranged across the top of and movably at right angles to the plane ofthe table, and oscillatory longitudinally,and curved at its under sidelongitudinally in the form of au inverted arch, substantially asdescribed and shown.

3. In combination with the sheet-supporting table, vertical guidesrising from opposite sides of said table, a press-beam extended acrossthe top of the table and arranged movably vertieallyin said guides,pitmen on opposite ends of the press-beam, and cranks connected withsaid pitmen and set at an angle in relation to each other to impart alongitudinally-rocking motion to the press-beam, substantially as andfor the purpose set forth.

4t. In combination with the shect-supporting table, alongitudinally-rocking press-beam, a pulley and gear pivoted in commonon the frame Y of the machine, abelt on the pulley, a treadle connectedto the belt, a shaft extended across the frame parallel with thepress-beam, a pinion on the said shaft meshing in the aforesaid gear,cranks set at an angle to each other on the ends of the shaft, andpitm'en connecting the cranks with the ends of the press-beam, allcombined to operate substantially as and for the purpose specified.

5. In combination with the sheet-supportin g table and pressbeam, aknife extended lengthwise said press-beam and secured thereon to beadjustable vertically, substantially as and for the purpose set forth.

6. In combination with the sheet-supporti ng table and press-beam, ashaft parallel with said press-beam, cranks set at an angle to eachother on the ends of said shaft, pitmen connecting the cranks with theends of the press-beam, a pinion on said shaft, a pivoted segmental gearmeshingin said pinion, a segmental pulley on the side of said gear andpivoted in common therewith, abelt on the pulley for turning the same inone direction, a treadle connected with said belt, and a spring forturning the pulley iu the opposite direction, all combined substantiallyas described and shown, for the purpose set forth.

In testimony whereof I have hereunto signed my name and affixed myseal,in the presence of two attesting witnesses', at Syracuse, in thecounty of Onondaga,in the State of New York,

l this 14th day of June, 1886.

l l r ICO

